Ok - I'll give you a different point of view

As I mentioned in my previous post I no longer ride with one. Nor do I ride with a watch. When I first started regularly commuting on my bike 10 years ago I found myself eagerly trying to set 'personal bests' while dodging through morning traffic. The computer gives you a number and every ride afterwards you are going to be chasing that number. I found I was starting to take risks and ride more aggressively than the situation warranted all so that I didn't lose my number.

The other reason I don't use a computer today is the ulitilarian aesthetic of cycling. I used to be the super road warrior geek with the computer, heart rate monitor and such. And that is all fine. But now - I much rather appreciate the simpler side of cycling. In fact, I'm rather taken now with the idea of getting a fixie.

By all means if your are interested in a computer get one! But be aware that it does change how you ride for better or worse